Locomotive stoker



Jan. 4, 1927. 7

I c. H. JEFFERS LOCOMOTIVE STOKER Filed August 31, 1925 2 Sheets-Sheet 14 7 Jan 1927 c. H. JEFFERS LOCOMOTIVE S'IOKER Filed August 51, 1925 2Sheets-Sheet 2 Patented Jan. 4, 1927.

" TA'FES l,el3,llll

CARL H. JEFFERFJ, 01 CANTUN, OHIG.

izocoinorrvii sronnn.

Application filed August 31, 1925.

The present invention relates to automatic locomotive stokers, and isparticularly an improvement over the locomotive stokers disclosed in myPatents Nos. 1,423,221 and lyillflfl? granted July 18, 1922 and June 30,1925, respectively.

One object of the invention is the provision of a novel deflector forscattering the particles of coal which are blown into the firebox of thelocomotive.

Another object is the provision of novel means for oscillating thedeflector in order to assist in the scattering of the coal throughoutthe area of the firebox.

i. further object is the provision of a novel closure for the coalreceiving opening of the firebox, which closure is cooper-able with acoal delivery nozzle that is movable into and out or": registration withsaid opening.

It is also an object of the invention to improve the coal delivery meansgenerally in its construction and assemblage of the component elements,in order that the stoker will be practical and efiicient in use.

llith the foregoing and other objects in view, which will be apparent asthe description proceeds, the invention resides in the construction andarrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, whereinFigure 1 is a fragmentary side elevation of the stoher embodying theimprovements, portions being shown in section, and the coal deliverynozzle being in retracted position.

F 2 is a rear view showing the nozzle in projected or delivery position,portions bei shown in section.

l a fragmentary rear view showing the" nozzle retracted, as in Fig. 1.

F lis a horizontal section on the line 44: o1 Fig. 2.

Fig. 5 is a perspective view of the finger pivoted to the upper portionof the deflector operating lever, showing the finger in full lines inthe position as shown in Figs. 1 and 3, and in dotted lines in the shownin Figs. 2 and 4cnumeral indicates the wall of the position as SerialNo. 53,641.

firebox which has the coal receiving opening 11 through which the coalis delivered into the firebox, and the fragments or particles of coalare delivered, after the coal is crushed, by a blower 12 through thedischarge pipe 13 thereof: and a nozzle or delivery pipe 14; slidable onthe pipe 13. Only a porion of the blower is shown, reference being hadto the aforesaid patents for a disclosure of the coal feeding andcrushing means and the blower. The pipe 13 projects upwardly, and thenozzle 14 is slidable upwardly and downwardly on the pipe 13, and theupper end portion 15 of the nozzle 14 is curved or directed toward thewall 10 of the firebox. The upper end of the nozzle 14 is formed with aslide plate 16 movable along the wall 10 to and from the opening 11, andsaid plate 16 has the grooves 17 at its side edges engaging the flanges18 of guide bars 19 that are secured to the wall 10, thereby guiding theplate 16 and upper end of the nozzle 15 for upward and downwardnioven'ient into and out of registration with the opening 11.

The nozzle 1 1 is raised and lowered by any suitable means. For example,as dis closed in said patents, a piston rod 20 is connected at its upperend with the nozzle L1 and works within a cylinder 21, so thatcompressed air, steam or other pressure fluid may be used for slidingthe nozzle.

The closure for the opening 11 comprises a pair of doors 22 pivoted, asat 23, to the Wall 10 above the opening 11, so that said doors inaoscillate away from one another and upwardly to open position anddownwardly toward one another to closed position, as seen in Figs. 2 and3, respectively. The doors 22 are preferably formed with intermeshinggear teeth 24. so that both doors swing simultaneously away from ortoward one another. The adjacent edges 25 of the doors abut when thedoors are in closed position, as seen in Fig. 3, and the doors have thecut-away portions 26 at the lower ends of the edges 25, forming a notchwhen the doors are closed. The upper ends of the flanges 18 overlap thedoors 22 so as to hold said doors against the wall 10, said doors beingpivoted to swing in a plane adjacent to and parallel with the wall 10.and the plate 16 moves in substantially the same plane.

The closure is automatically opened when the nozzle 14 is projected intoregistration with the opening 11. Thus, the plate 16 has the upwardlyconverging edges 27 forming a wedge whose nose projects into the notchformed by the portions 26, as seen in Fig. 3. Thus, when the nozzle 14is raised the plate 16 will swing the doors 22 apart by wedge action,and the upper end of the nozzle 14 moves into registration with theopening 11, with the doors 22 swung apart and their edges 25 abuttingthe edges 27 of the plate 16, so that the plate 16 and doors 22 coverthe opening 11, as seen in Fig. 2. When the nozzle 14 is retracted thedoors 22 will swing closed by gravity. Said doors may also be readilyswung open by the fireman or attendant when desired.

A shelf 28 is supported by the wall 10 immediately under the opening 11and projects inwardly from said wall into the firebox. A plate 29,forming the base of the deflector, is seated on the shelf 28, andpivotally engages over a pivot stud 3O rising from the shelf or bracket28, so that the deflector may oscillate about said stud 30. Thedeflector 31, which may be cast integral with the plate 29, rises fromthe plate and has the deflecting walls or surfaces 32 diverging awayfrom the opening 11 and in clined, so that said surfaces or wallsdeflect the particles of coal toward opposite sides, while some of theparticles will be blown upwardly over the deflector, in order that thedeflector will scatter the particles of coal effectively throughout thearea of the firebox. The top surface of the deflector 31 slopesrearwardly and has no effect on the deflection of the particles of coal,and the surfaces or walls 32 only deflect a portion of the coal towardthe sides of the firebox. It will be apparent that when the nozzle 14 israised into registration with the opening 11 and the particles of coalare blown with the air blast through the opening 11 some of theparticles will pass into the firebox over the deflector 31 while otherparticles at the lower portion of the stream will be deflected laterallyby the surfaces or walls 32, there by scattering the coal transverselyand longitudinally of the firebox.

The deflector is oscillated in order to assist in the lateral spreadingof the coal in the firebox. For this purpose, the plate-29 has atransverse flange 33 at that end adjacent to the opening 11 over which aplate 34 extends in overlapping relation with said flange 33, and theplate 29 has a rounded groove 35 extending across the upper face of theflange 33. The plate 34 is formed with a rounded-rib or bead 36 fittingin the groove 35 to provide a sliding hinge connection between theplates 34 and 29, permitting the plate 34 to be swung upwardly from theflange 33 The bead or rib 36 is also slidable in the groove 35transversely of the plate 29, and the groove 35 is so fornn ed as toprovide a lip 37 overlapping the bead or rib 36 so as to hold said beador rib in the groove 35, the plates 34 and 29 being assembled by slidingthe bead or rib 36 longitudinally into the groove 35 from either sideedge of the plate 25 The flange 33 has an upstanding pin or lug 38, toengage in either of a series of apertures 39 with which the plate 34 isprovided to prevent lateral sliding adjustment of the plates 34 and 29.However, by swinging the plat 34 upwardly it is disengaged from the hr33 and the plate 34 may be adjusted transversely of the plate 29 toengage the lug 33 in another aperture 39, and this will change therelative position of the plates 34 and The plate has anoteh or open slot40 for the engagement of the linger 40 of the actuating means as will bepresently described.

The flnger 40 is pivotally connected to the upper end of the upper arm41 of a lever 42- which is fulcrume l, as at 43, to the nozzle 14, inorder that said leve raised and lowered with the nozzle lVhen the nozzleis lowered the finger 40 is swung upwardly as seen in dotted lines inFigs. 1 and 3, and bears against the wall 10. ll hen the nozzle israised into registration with the opening 11, the finger 40 will swingdownwardly by gravity through the opening 11 so as to rest on the slate34, a d will drop into the notch 40, in any position of the plate 34,when the lever 42 is oscillated, in order that the oscillation of thelever 42 will move the finger 40 transversely of the opening 11 therebyoscillating the deflector 31. The actuating means is thus automaticallyconnected to and disconnected from the deflector when the nozzle 14moved into and out of registration with the opening 11.

The lever 42 has a lower arm 44 which is preferably offset to one side,and the plate 16 has a recess 45 accommodatin the upper arm 41 of saidlever. The arm, 44 has a longitudinal vertical slot 46 in which a crank47 of a rock shaft 48 engages. Said shaft is journaled in the bearingsof brackets 49 and 50 secured to the casing of the blower 12. The shaft48 has an arm 51 connected by a link or connecting rod 52 with a crankpin 53 operated by a shaft 54. As shown, the crank pin 53 is carried bya worm wheel 55 secured on the shaft 54, and a worm meshing with theworm wheel 55 is driven by a drive shaft '57. Thus, as the shaft 57 isoperated in the operation of the stoker, the crank motion of the pin 53and connecting rod 52 will oscillate the arm 51 and shaft 48, therebyoscillating the crank 47 and lever 42. The slot 46 permits the lever 42to move upwardly and downwardly with the nozzle 14 without interferingwith the actuation of said lever while being moved upwardly ordownwardly to or from the opening 11.

When the stroker is brought into operation, the nozzle 14 is raised, sothat the plate 16 separates the doors 22 as the nozzle 14 is broughtinto registration with the opening 11, as seen in Fig. 2. The actuatingmeans will oscillate the lever 42, and when the nozzle is raised thefinger will swing by gravity through the opening 11 onto the plate 34and will drop into the notch 40, thereby oscillating the plates 34 and29 about the pivot stud 30. Thus, as the particles of coal are blownwith the air through the nozzle 14 and opening 11 into the firebox, thedeflector is oscillated to ass st in the spreading of the coalthroughout the firebox. When the nozzle 14 is retracted, the doors 22close automatically, and the finger 40 is swung upwardly when passingover the lower edge of the opening 11, thereby disconnecting theactuating means from the deflector.

By adjusting the plate 34 transversely with reference to the plate 29,it is apparent that the position of the deflector 31 is changedangularly with reference to the finger 41, and it is thus possible toregulate i the deflection of the coal to the opposite sides of thefirebox, and the deflector can be made to move further toward one sidethan the opposite side, or may be made to move the same distance towardopposite sides of the longitudinal line of the stud 30.

Having thus described the invention, what is claimed as new is 1. In aStoker, the combination with a firebox wall having an opening, of a fueldelivery nozzle at the outer side of said wall movable into and out ofregistration with said opening, an oscillatory deflector mounted at theinner side of said wall for deflecting fuel delivered through saidopening from said nozzle, and means for oscillating said deflectorbrought into and out of action by the movement of the nozzle to and fromsaid opening, respectively.

2. In a stoker, the combination with a firebox wall having an opening,of a fuel delivery nozzle on the outer side of said wall movable intoand out of registration with said opening, a shelf carried by said wallat the lower portion of the opening and extending inwardly from saidwall, a deflector mounted on said shelf for oscillatory move ment andarranged for deflecting fuel delivered through said opening from saidnozzle, and means for actuating said deflector, brought into and out ofaction by the movement of the nozzle into and out of registration withsaid opening, respectively.

3. In a Stoker, a fuel delivery nozzle movable to and from deliveryposition, an oscillatory deflector arranged to deflect fuel de liveredfrom said nozzle when it is in delivery position, and actuating meansfor the deflector arranged to be connected to and disconnected from thedeflector by the move ment of the nozzle to and from delivery position.v

4. In a stoker, a delivery fuel nozzle movable to and from deliveryposition, an oscillatory deflector arranged to deflect fuel deliveredfrom said nozzle when it is in delivery position, and actuating meanscarried by the nozzle, said means and deflector having portions arrangedto be connectednnd disconnected, respectively, by the movement of thenozzle to and from delivery position.

5. In a stoker, the combination with a firebox wall having an opening,of a fuel delivery nozzle movable into and out of registration with saidopening, an oscillatory deflector mounted inwardly of said opening fordeflecting fuel delivered through said opening from the nozzle andactuating means arranged to be connected to and disconnected from saiddeflector by the movement of the nozzle into and out of registrationwith said opening.

6. In a stoker, the comb nation with a firebox wall having an opening,of a fuel delivery nozzle movable into and out of registration with saidopening. an oscillatory deflector mounted inwardly of said opening fordeflecting fuel delivered from said nozzle through said opening, anactuat ing member carried by Said nozzle. and means for operablyconnecting said deflector and member and disconnecting them when thenozzle is moved into and out of registration with said opening,respectively.

7. In a stoker, the combination with a firebox Wall having an opening,of a fuel delivery nozzle movable into and out of registration with saidopening, an oscillatory deflector mounted inwardly of saidopening fordeflecting fuel delivered through said opening from the nozzle, anactuating mem ber carried by the nozzle, a finger pivoted to said memberand arranged to swing through said opening when the nozzle is moved intoregistration with said opening, and a portion connected with thedeflector with which said finger is eugageable for oscillating thedeflector by the movement of said member.

8. In a stoker, the combination with a firebox wall having an opening,of an oscillatory plate mounted adjacent to said opening and having adeflector for deflecting fuel blown through said opening, a second platehaving a sliding hinge connection with the firstnamed plate, said plateshaving portions to engage one another when the second plate is in normalposition and to disengage one another when the second plate is swungaway from normal position so that said second plate may be adjustedslidably relatively to the firstnamed plate, and actuating means withwhich the second plate is engageable in the dillerent adjustments of thePliltGS to change the relation of the firstnamed plate to the actuatingmeans.

9. In a stoker, the combination with a firebox wall having an opening,of a plate mounted adjacent to said opening for osci lation and having agroove and a deflector for deflecting fuel blown through said opening, asecond plate having a rib fitted in said groove for turning and slidingmovements to provide a sliding hinge connection between the plates, saidplate having portions to engage one another when the second plate is innormal position to prevent tive sliding movement between the plates, andsaid portions being disengaged when the second plate is swung to anotherposition to permit the plates to be adjusted slidably relatively to oneanother, and actuating means for oscillating the firstnamed plate, thesecond plate having a portion for en gagement with the actuating meansin the different adjustments of the plates to change the relation of thefirstnamed plate to the avtuating means.

10. In a stoker, the combination with a firebox wall having an opening,oil a closure for said opening pivoted to said wall to swing in a planeparallel to said wall, and a delivery nozzle movable into and out ofregistration with said opening and having a plate atits delivery endmovable along said wall substantially in said plane and across saidopening, said plate being arranged to swing the closure open when thenozzle is moved into registration with said opening.

11. In a Stoker, the combination with a firebox wall havingv an opening,of doors pivotally mounted to swing together and close said opening, anda delivery nozzle movable into and out or" registration with saidopening and having means for swinging SulLl doors apart when the nozzleis moved into registration wit-h said opening.

12in a Stoker, the combination with a firebox wall having an opening, ofdoors pivoted to said wall to swing together across said opening, and adelivery nozzle movable into-and out of registration with said openingand having a wedge portion at its de livery end to move between saiddoors "for swinging the doors apart when the nozzle is moved deliveryposition in registration with said opening.

13. in a stoker, the combination with a firebox wall having an opening,of a pair t doors pivoted to said wall above said opening to swingdownwardly abut against one another across said opening, and a liverynozzle movable upwardly and downwardly into and out of registration withsaid opening and having a plate at its delivery end movable along saidwall, said plate having upwardly converging edge-fa forming a wedgeportion to move upwardly between said doors for swinging the doors apartwhen the nozzle is raised into tration with said opening.

In testimony whereof I hereunto a'liix my signature.

CARL H. JEFF Q29.

